The rules of the game

The rules of the sudoku are quite simple. A classic sudoku grid is made of nine rows and nine columns, giving 81 cells.

You must fill each cell with numbers going from 1 to 9, with the restriction that one single number can only appear once in the same row, in the same column, or in the
same box of 3x3 cells.

At the game start, twenty to thirty numbers are already given and you have to find all the others. Indeed, a valid starting grid can only lead to one and only one
solution. To find the missing numbers, you must use logic and observation.

Many variants can be played, only changing the quantity of rows or columns.
You can try on Live Sudoku all the combination of grids from kids sudoku to giant sudoku.

To ease your game, we give you a few tips and tricks quite easy to remember. Use them wisely, and you will be able to complete your sudokus faster!